Extrusion & Post
7 조회수
Bottom bursting of PET stretch-blow bottles
문제 현상
The bottom of PET bottles bursts during inflation or dropping, especially carbonated beverage bottles.
원인 분석
Improper bottle bottom design (draw ratio too large and over-thinned); molecular chains at the bottom injection point are highly oriented but weakly bonded.
해결 방법
Optimize the bottle bottom geometry, increasing the bottom radius and adopting a petaloid bottom; adjust preform bottom heating; control pre-blow and main-blow timing.
핵심 요약
PET bottle bottom bursting is one of the most dangerous defects.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!